Should work. It is up to you which one you wish to use. Intelfb is known to have a few problems with hardware acceleration and requires grub2 patched with 915resolution to properly set the correct resolution.

The package grub2-915resolution in the AUR has the necessary patch to make intelfb work with laptops that use the 965GM card.

Note: The keycode numbers may be different than these (they are on my T61.) Also, new versions of the X server may already give your multimedia keys the correct name, and if so you don't need to make a .Xmodmap file. To check this, run "xev" and press your volume keys to see what keycodes and keysyms it gives.

Once you know X gives your keys the right names, you can set up the shortcuts to run the amixer or mpc commands. You can do this in your window manager/desktop environment's key settings, or using xbindkeys by making a ~/.xbindkeysrc like this one: